Cutter head



.June261,1923. 1,459,766

` H. G.' LALDRlDGE CUTTER HEAD Filed March 2s.' 1922 Patented dune 25, 1923i.

'IED STATES l time@ orales.;

HARRY G. ALDRIDGE, OF ROCHESTER, NEW YORK, ASSIGNOR TO HU'THER BROS. SAW MFG. CO., INC., OF ROCHESTER, vNEW' YORK, A CORPORATION OF NEW YORK.

. CUTTER HEAD.

Application filed March 23, `1922. Serial No. 545,953.

To all iti/0m it may concern.'

Be it known that I, HARRY G. ALDRIDGE, of Rochester, in the county of Monroe and State of New York,\have invented certain new and useful Improvements in Cutter vHeads; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing, forming part of they will-be securely held accurately in po` sition and yet be readily adjustable to com pensate for wear and to regulate the chip.

To these and other ends the invention consists in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel fea-tures being pointed out in the claims at the end of the specification.

In the drawings: j

Figure l is a front view of a cutterv head constructed in accordance with and illustrating one embodiment of my invention;

Figure 2 is a section therethrough on the line 2 2 of Figure l;

v Figure 3 is an axial section; and

Figure Ll is a perspective view of one of the knives or cutters.

Similar reference numerals throughout the several views indicate the same parts. j In the practice of my invention I provide a cylindrical steel head or body portion centrally bored to fit a spindle 2 on which it is clamped as usual. i Though the 'head may be made with a single `or any number of cutters, I have shown two in the present instance oppositely arranged. rI`hey are fiat and substantially rectangular in shape, as shown at 3 in Figure 4L, and are provided with a. substantially central elongated slot l. rIhe head l has a sawed or milled slot 5 therein cut on a chord of the circumference so that it opens on both ends but at only one point on the periphery, the slot being cut about two-'thirds of the way Cil through. The knife or cutter 3 fits the slot snugly with its cutting edge 6 projecting from the periphery and its side edges projecting slightly at the endfaces of the head, as shown in Figure 3. Thesel projecting side portions are received in and both clamped and guided by ways or channels 7 cut in a pair of end plates 8` that are clamped to the end faces of the head lby the collars 9 and nut l0 usually employed for mounting a cutter of this kind on its spindle.

Through well 1l in the periphery of the head that communicates with the slot 5, a clamping screw l2 is inserted, beneath the head 13 of which the blade or knife 3 is clamped against retrograde movement in the slot and ways, this screw passing through the elongated slot t in the knife. Behind the latter' in the plane of the slot the head is bored and threaded at 14; to receive a set screw `l5 by means ofwhich the blade may be adjusted when the screw 12 is loosened to project its cutting edge 6 the desired dis? tance.y i l rllhe end plates 8 and their ways 7 fit the head and the bladesl tightly and may be made to clamp as well as guide the blades, but if the fit is accurate the screws l2 are sufiicient clamping means inasmuch as the blade is backed up by the set screw l5 and lateral or twisting movement is absolutely prevented by the plates. n

A set screw loin a threaded radial bore 1T in the `head locks it to the spindle 2.

I claim as my invention:

l. In a cutter, the combination with a cylindrical head having slots therein lying in chords of the circumference, of knives occupying the slots and separate end plates clamped to the head and provided with channels in which the sides of the knives are seated.

2. In a cutter, the combination with a cylindrical head having `slots therein lying in chords of the circumference, of knives occupying the slots, separate end plates clamped to the head and provided with channels in which the sides of the knives are seated and are adapted to slide, a securing device for each knife, extending transversely through eachslot and an adjusting device for each blade arranged in the plane of the slot and adapted to force the blade along the channels.

HARRY e. Miniemen.l 

